Rotary pump



A. HAYES.

ROTARY PUMP. APPLICATION FILED SEPT. 5,1917- 'RENEWED APR. 1. I921.

. Patented NOV. 1, 1921.

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ROTARY PUMP.

APPLICATION FILED SEPT-5,1917. RENEWED APR. 1, 1921.

1,395,917. Patented mi, 1921.

2 SHEETS-SHEET 2. N \q n a N N UT A an art.

ALBERT HAYES, OF NEW YORK, N. Y., ASSIGNOR T CARNOT DEVELOEMENT C00- RA'IION, A CORPORATION OF NEW YO 1';

ROTARY PUMP.

Specification of Letters Patent.

Patented Nov. 11, 1921 Application filed September 5, 1917, Serial No. 189,724. Renewed April 1, 1921. serial No. 457,707.

' To all whom it may concern Be it known that I, ALBERT HAYES, a citizen of the United States, residing at New York, in the county of New York, State of New York, have invented certain new and useful Improvements in Rotary Pumps, of .which the following is a description, reference being bad to the accompanying drawin s, forming a part hereof.

My invention relates to rotary pumps of the class which comprises as features of construction a chamber of cylindrical or approximately cylindrical form having an inlet and an outlet and a carrier mounted to rotate in the chamber on an axis eccentric to the axis of the chamber and carrying gates or pistons arranged to slide in slots in the carrier and guided in their movement as the carrier rotates, by fixed cams in the heads of the chamber.

My invention has for its object to provide a pump of the class above described which will be simple and inexpensive to construct, will be highly efiicient in operation and will be free from liability to clogging or injury from sand or grit.

With these and other objects hereinafter explained in view, my invention consists in the construction and combination of elements hereinafter described and claimed.

Referring to the drawin s:

Figure 1 is a side elevatlon partly in section of a pump embodying my invention.

Fig. 2 is a front view of one of the heads.

Fig. 3 is a central vertical sectional view of the pump and Fig. 4 is a detail end elevation of one of the gates 0r pistons.

In the construction shown in the drawings the chamber comprises two heads 1 and 2 a body 3 connecting the two heads and a cylinder 4: carried by the heads and extending through the body 3. The heads 1 and 2 are disk shaped as shown. The head 1 is provided above its center with an opening5 for the shaft 6. The head 2 is provided above its center with a circular recess 7 to receive the end of the shaft and at the'center of the recess with a conicalrecess 8 to receive a conical point 9 on the end of the shaft in line with its axis. Near their peripheries the heads 1 and 2 are turned 01% their inner faces to form flanges 10 and shoulders 11 the shoulders serving to support the cylinder 4 with its edges abutting against the flanges 10.

The heads 1 and 2 are each provided on its inner face with a recess 11 circular in form but'having its periphery formed on a circle having its center slightly below the axis of the cylinder 4. In this recess 11 is arranged a ball race comprising a ring 13 and antifriction balls 14 between the ring and the periphery of the recess.

Within the cylinder 4 is arranged a carrier 15 which is fast on shaft 6. This carrier is provided witha series of radial slots 16 here shown as four in number in which gates or pistons 17 are arranged to slide. These gates or pistons are provided at their inner rin 13.

T he cylinder 4 is provided centrally between the heads with slots 20 and 21 the slots 20 forming the inlet opening and the slot 21 forming the outlet opening. The inlet opening 20 extends from a point somewhat above the plane of the shaft 6 to a point in. the vertical plane of the axis of the shaft and the outlet opening extends from a point in a plane below the plane of the shaft to a point somewhat beyond the vertical plane of the axis of the shaft.

The body 3 incloses the cylinder 4:. From the end of the outlet opening 21 to the inlet opening 22 the body fits closely against the periphery of the cylinder and from the inlet opening to the outlet opening it also fits closely against the periphery of the cylinder. For a portion of the inlet opening it also preferably fits closely against the cylinder. The body is provided with an inlet opening on the side having a socket 22 interiorly screw threaded to receive'an inlet or suction pipe and is provided at the top with a socket 23 also interiorly screwthreaded to receive the delivery pipe. In the construction shown the socket 23 is adapted to receive a larger pipe than the socket 22.

From the lower end of the outlet opening 21 to the socket 23 the body is curved away from the cylinder so as to form an enlarged chamber 25 leading to the delivery pipe to permit the free outflow of liquid from the cylinder. The body 3 is supported on a base 26 b brackets 27.

T e carrier rotates in the direction indicated by the arrow in Fig. 3 the gates or' pistons sweeping downward along the cylinder opposite the inlet opening and then upward to the outlet opening. The studs 18 bear against the interior of the ring 13 where they are above the plane of the shaft 6, that is when they are adjacent the outlet opening 21 and serve by their contact with the ring to draw the gates or pistons inward so as to pass through the liquid in the outlet opening with as little disturbance as possible. As the gates or pistons pass below the level of the shaft they are thrown outward by centrifugal force to bring their outer edges in close contact with the inner peripheries of the cylinder. The inner periphery of the ring, by reason of its rotating in the recess 12 which is slightly eccentric, will be below and out of contact with the studs at a point directly below the shaft and for some distance each side of this point so that throughout its suction action the outer edges of the gate or piston will be held against the inner periphery of the cylinder and will not be held from close contact with the cylinder by the contact of its stud with the interior of the ring.

Having thus described my invention what I claim is".

1. The combination of a cylinder having inlet and outlet openings, a cylindrical radially slotted carrier mounted to rotate eccentrically in said cylinder, sliding gates mounted in the slots of the carrier to make contact with the interior of the cylinder and having laterally extending portions, heads for the cylinder each having a circular recess formed therein adapted to receive the laterally extending portions of the gates and a ring bearing against the periphery of the recess and movable therein, adapted to receive Within its inner periphery the laterally extending portions of the gates.

2. The combination of a cylinder having inlet and outlet openings, a cylindrical radially slotted carrier mounted to rotate eccentrically in said cylinder, sliding gates mounted in the slots of the carrier to make contact with the interior of the cylinder and having laterally extending portions, heads for the cylinder each having a circular recess formed therein adapted to receive the laterally extending portion of the gates and a ring bearing against the periphery of the recess and movable therein, adapted to receive within its inner periphery the laterally extending portions of the gates said circular recess being eccentric to the heads.

3. The combination of a cylinder having inlet and outlet openings, a cylindrical radially slotted carrier mounted to rotate eccentrically in said cylinder sliding gates mounted in the slots of the carrier to make con tact with the interior of the cylinder and having laterally extending portions, heads for the cylinder each having a-circular recess formed therein adapted to receive the laterally extending portions of the gates and a ring bearing against the periphery of the recess and movable therein, adapted to receive Within its inner periphery the laterally extending portions of the gates, said ring having antifriction bearing in the periphery of the recess.

In testimony whereof I afiix my signature this 12th day of May, 1917.

ALBERT HAYES. 

